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Harmonic monitoring system and method

A harmonic monitoring and high-speed communication technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve problems such as damaging equipment, endangering the safe operation of the power system, and affecting the operating efficiency of the system, achieving high reliability and short computing cycles , The effect of strong data processing ability

Pending Publication Date: 2020-10-02
江苏名博电力工程设计有限公司
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Problems solved by technology

After the power system is polluted by harmonics, it will affect the operating efficiency of the system at least, and damage the equipment and even endanger the safe operation of the power system.

Method used

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  • Harmonic monitoring system and method

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Embodiment Construction

[0020] The following is attached with the manual Figure 1-2 , the present invention is further described in detail.

[0021] A harmonic monitoring system, including a signal acquisition module, a central processing module and a high-speed communication module, the central processing module is TMS320F2812, the high-speed communication module is CANT-100T, the signal acquisition module is externally connected to a three-phase voltage signal, and the signal acquisition The module is electrically or communicatively connected to the central processor module, the high-speed communication module is electrically or communicatively connected to the central processor module, the high-speed communication module is communicatively connected to the data center, and the signal acquisition module includes a signal conditioning circuit and an analog-to-digital converter, the analog-to-digital converter is ADS8364, the signal conditioning circuit is used to convert the AC voltage and current ...

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Abstract

The invention discloses a harmonic monitoring system. The system comprises a signal acquisition module, a central processor module and a high-speed communication module, the signal acquisition moduleis externally connected with a three-phase voltage signal, the signal acquisition module is electrically or communicatively connected with the central processor module, the high-speed communication module is electrically or communicatively connected with the central processor module, and the high-speed communication module is communicatively connected with a data center. The monitoring system is based on a DSP and a CAN bus. Compared with other processors, the DSP is high in data processing capacity, complex algorithms can be achieved, a large amount of data can be operated and analyzed in real time, so the monitoring system is quite suitable for harmonic monitoring of an electric power system; and the adopted CAN bus has the advantages of high speed, long distance, high reliability and the like, and a selected FFT algorithm is also a mainstream algorithm in the field of harmonic analysis, is short in operation period and is easy to implement in a DSP. The system is applied to actuallymonitoring a voltage signal in a complex field environment, and the reliability and accuracy of the system are verified; and actual operation results show that harmonic information of a power grid can be accurately reflected.

Description

technical field [0001] The invention relates to the field of harmonic monitoring, in particular to a harmonic monitoring system and a monitoring method. Background technique [0002] With the rapid development of power electronics technology, more and more new types of electrical equipment have come out and used, and the impact of harmonics has become more and more serious. After the power system is polluted by harmonics, it will affect the operating efficiency of the system at least, and damage the equipment and even endanger the safe operation of the power system. Therefore, it is necessary to design a harmonic monitoring system and monitoring method for online monitoring of harmonics. Contents of the invention [0003] The object of the present invention is to provide a harmonic monitoring system and monitoring method, which can solve one or more of the above-mentioned problems in the prior art. [0004] A harmonic monitoring system according to the present invention ...

Claims

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Application Information

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IPC IPC(8): G01R23/165
CPCG01R23/165
Inventor 辛洪举
Owner 江苏名博电力工程设计有限公司
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